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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

Toledo Village Water Supply Corporation

Chloromethane is an industrial solvent, aerosol propellant and a refrigerant. It also forms as a byproduct of water disinfection. The EPA classifies chloromethane as possibly carcinogenic to humans.

 

11

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND10ND
2015ND20ND
2016ND20ND
2017ND20ND
2018ND20ND
2019ND20ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 2.69 ppb

The EWG Health Guideline of 2.69 ppb for chloromethane was defined by the Environmental Protection Agency as a benchmark for testing under the Unregulated Contaminant Monitoring Rule program. This health guideline protects against cancer.

ppb = parts per billion

All test results

Date Lab ID Result
2014-11-18AC72350ND
2015-09-09AD06245ND
2015-09-09AD06251ND
2016-03-30AD31184ND
2016-03-30AD31168ND
2017-09-13AD96287ND
2017-09-13AD96281ND
2018-08-02AE35560ND
2018-08-02AE35556ND
2019-03-21AE59468ND
2019-03-21AE59470ND